Ключевые слова: background, bank, banknote, black, bonus, buyer, capital, change, credit, creditor, currency, economical, economy, euro, europa, exchange, expense, fiat, hand, hundred, isolated, loan, money, note, owner, palm, pay, payer, paying, payment, purchase, purchaser, purchasing, return, reward, rich, saving, seller, trading, transfer, union, wealth,